The Nature of Low Surface Brightness X-Ray Clusters of Galaxies

Details The Nature of Low Surface Brightness X-Ray Clusters of Galaxies The Nature of Low Surface Brightness X-Ray Clusters of Galaxies

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002cxo..prop.1322b&link_type=abstract

Chandra Proposal ID #04800884

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Chandra Proposal Id #04800884

Scientific paper

We propose ACIS-S observations of 5 newly discovered Low Surface Brightness (LSB) X-ray clusters of galaxies. These rich clusters are apparently so lacking in central concentration in X-rays that although above the flux limit, they were missed by the EMSS survey. This omission of high-z X-ray clusters seriously affects estimates of evolution in the cluster XLF and Omega(matter). Chandra will reveal the nature of these new systems: What is their X-ray morphology and why were they missed by the EMSS? Critically: would other new or recent surveys also miss such clusters? ACIS imaging spectroscopy will resolve any confused point sources, and determine if LSB clusters represent a new class of objects: clusters in formation with high Lx, low Tx, and significant substructure.

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